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There are a total of 34224 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Single-Particle Measurements of Midlatitude Black Carbon and Light-Scattering Aerosols from the Boundary Layer to the Lower Stratosphere
Author(s): Schwartz, J. P.; Gao, R. S.; Fahey, D. W.; Thomson, D. S.; Watts, L. A.; Wilson, J. C.; Reeves, J. M.; Darbeheshti, M.; Baumgardner, D. G.; Kok, G. L.; Chung, S. H.; Schulz, M.; Hendricks, J.; Lauer, A.; Kaercher, B.; ...
Abstract: A single-particle soot photometer (SP2) was flown on a NASA WB-57F high-altitude research aircraft in November 2004 from Houston, Texas. The SP2 uses laser-induced incandescence to detect individual black carbon (BC) ...
NASA Center: Ames Research Center
Publication Year: 2006
Added to NTRS: 2009-01-15
Document ID: 20090001329
Validation of Aura Microwave Limb Sounder O3 and CO Observations in the Upper Troposphere and Lower Stratosphere
Author(s): Livesey, N. J.; Filipiak, M. J.; Froidevaux, L.; Read, W. G.; Lambert, A.; Santee, J. L.; Jiang, J. H.; Pumphrey, H. C.; Waters, J. W.; Cofield, R. E.; Cuddy, D. T.; Daffer, W. H.; Drouin, B. J.; Fuller, R. A.; Jarnot, R. ...
Abstract: Global satellite observations of ozone and carbon monoxide from the Microwave Limb Sounder (MLS) on the EOS Aura spacecraft are discussed with emphasis on those observations in the 2 15 - 100 hPa region (the upper ...
NASA Center: Ames Research Center, Jet Propulsion Laboratory, Langley Research Center
Publication Year: 2008
Added to NTRS: 2009-01-15
Document ID: 20090001325
Reentry thermal protection from Pioneer F RTG insulation material
Author(s): Vorreiter, J. W.
Abstract: Ablation tests were performed on the insulation material used in the Pioneer F radioisotope thermoelectric generator (RTG) in the Ames Arc-Heated Planetary-Gas Wind Tunnel. Test results indicate that the material, trade name ...
NASA Center: Ames Research Center
Publication Year: 1972
Added to NTRS: 2009-01-15
Accession Number: 72N15908; Document ID: 19720008258; Report Number: NASA-TM-X-62100
Measurements of Trace Gases in the Tropical Tropopause Layer
Author(s): Marcy, T. P.; Popp, P. J.; Gao, R. S.; Fahey, D. W.; Ray, E. A.; Richard, E. C.; Thompson, T. L.; Atlas, E. L.; Lowenstein, M.; Wofsy, S. C.; Park, S.; Weinstock, E. M.; Swartz, W. H.; Mahoney, M. J.
Abstract: A unique dataset of airborne in situ observations of HCl, O3, HNO3, H2O, CO, CO2 and CH3Cl has been made in and near the tropical tropopause layer (TTL). A total of 16 profiles across the tropopause were obtained at ...
NASA Center: Ames Research Center, Jet Propulsion Laboratory
Publication Year: 2008
Added to NTRS: 2009-01-15
Document ID: 20090001328
Quantifying the Impact of the North American Monsoon and Deep Midlatitude Convection on the Subtropical Lowermost Stratosphere using in Situ Measurements
Author(s): Weinstock, E. M.; Pittman, J. V.; Sayres, D. S.; Smith, J. B.; Anderson, J. G.; Wofsy, S. C.; Xueref, I.; Gerbig, C.; Daube, B. C.; Pfister, L.; Richard, E. C.; Ridley, B. A.; Weinheimer, A. J.; Jost, H.-J.; Lopez, J. P.; ...
Abstract: The chemical composition of the lowermost stratosphere exhibits both spatial and temporal variability depending upon the relative strength of (1) isentropic transport from the tropical tropopause layer (TTL), (2) diabatic ...
NASA Center: Ames Research Center
Publication Year: 2007
Added to NTRS: 2009-01-15
Document ID: 20090001327
Observations of disk-shaped bodies in free flight at terminal velocity
Author(s): Vorreiter, J. W.; Tate, D. L.
Abstract: Ten disk-shaped models of a proposed nuclear heat source module were released from an aircraft and observed by radar. The initial launch attitude, spin rate, and mass of the models were varied. Significant differences were ...
NASA Center: Ames Research Center
Publication Year: 1973
Added to NTRS: 2009-01-15
Accession Number: 73N22978; Document ID: 19730014251; Report Number: NASA-TM-X-62262
A unified two-dimensional approach to the calculation of three-dimensional hypersonic flows, with application to bodies of revolution
Author(s): Eggers, A J , Jr; Savin, Raymond C
Abstract: A procedure for calculating three-dimensional steady and nonsteady supersonic flows with the method of characteristics is developed and discussed. An approximate method is deduced from the characteristics method and shown to ...
NASA Center: Ames Research Center
Publication Year: 1955
Added to NTRS: 2009-01-14
Accession Number: 93R20287; Document ID: 19930090997; Report Number: NACA-TR-1249
Thin airfoil theory based on approximate solution of the transonic flow equation
Author(s): Spreiter, John R; Alksne, Alberta Y
Abstract: A method is presented for the approximate solution of the nonlinear equations of transonic flow theory. Solutions are found for two-dimensional flows at a Mach number of 1 and for purely subsonic and purely supersonic flows. ...
NASA Center: Ames Research Center
Publication Year: 1958
Added to NTRS: 2009-01-14
Accession Number: 93R20306; Document ID: 19930091016; Report Number: NACA-TR-1359
Bodies of revolution having minimum drag at high supersonic airspeeds
Author(s): Eggers, A J , Jr; Resnikoff, Meyer M; Dennis, David H
Abstract: Approximate shapes of nonlifting bodies having minimum pressure foredrag at high supersonic airspeeds are calculated. With the aid of Newton's law of resistance, the investigation is carried out for various combinations of ...
NASA Center: Ames Research Center
Publication Year: 1957
Added to NTRS: 2009-01-14
Accession Number: 93R21589; Document ID: 19930092299; Report Number: NACA-TR-1306
Helicopter simulation technology: An Ames Research Center perspective
Author(s): Bray, R. S.
Abstract: The total experience for evidence regarding the levels of motion and visual cueing fidelity required for handling-qualities research in ground-based simulators is reviewed. Positive contributions of cockpit motion were ...
NASA Center: Ames Research Center
Publication Year: 1982
Added to NTRS: 2009-01-14
Accession Number: 82N23227; Document ID: 19820015353
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